Scientific and Technology Division, Library of Congress (1967). Astronautics and Aeronautics. Washington, D.C.: Scientific and Technical Information Branch, National Aeronautics and Space Administration. p. 259.
Palme, Herbert (2018). "Cosmochemistry along the Rhine"(PDF). Geochemical Perspectives. 7 (1): 4–10. Archived from the original(PDF) on 31 July 2020. Retrieved 31 December 2019.
O. R. Frisch Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment, Nature, Volume 143, Number 3616, 276-276 (18 February 1939)Archived 23 January 2009 at the Wayback Machine. The paper is dated 17 January 1939. [The experiment for this letter to the editor was conducted on 13 January 1939; see Richard Rhodes The Making of the Atomic Bomb 263 and 268 (Simon and Schuster, 1986).]
Palme, Herbert (2018). "Cosmochemistry along the Rhine"(PDF). Geochemical Perspectives. 7 (1): 4–10. Archived from the original(PDF) on 31 July 2020. Retrieved 31 December 2019.
O. R. Frisch Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment, Nature, Volume 143, Number 3616, 276-276 (18 February 1939)Archived 23 January 2009 at the Wayback Machine. The paper is dated 17 January 1939. [The experiment for this letter to the editor was conducted on 13 January 1939; see Richard Rhodes The Making of the Atomic Bomb 263 and 268 (Simon and Schuster, 1986).]
yadvashem.org
db.yadvashem.org
"Strassmann Fritz". The Righteous Among the Nations Database. Yad Vashem. Retrieved 31 December 2019.
